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SWI_MOON_NADIR_STARE_PS_V1
SWI MOON NADIR STARE PS V1
Investigation of Galilean Moons’ surface properties and atmospheric composition,
temperature, and winds, and surface properties. This mode can also be used to characterize
surface polarization by pointing 45 off-nadir, after rotating the S/C by 90 around its
nadir axis. It can also serve for solar occultation experiments to observe a weak molecular line
in the atmosphere of Jupiter, a Galilean Moon, or the Europa torus. Flyby: Two CTS spectra
are recorded for 30 seconds over 210 channels (16 bits coding). GCO: Two CTS spectra are
recorded for 10 seconds over 130 channels (16 bits coding). In both cases, two CCH measurements
(20 bits coding) are recorded for 0.1 sec, so that they are separated by maximum 1/2 beam
at 1200 GHz. Solar occultation: Two CTS spectra are recorded for 60 seconds over 10000 channels
(16 bits coding), and two CCH measurements (20 bits coding) are recorded for 0.1 second.
Position-switch calibration method.
SWI

Pointing

nadir
-

Advanced

This mode will be used during phases I and III of the
flybys, between -6hrs and -4.5hrs and between +3hrs and +4.5hrs from CA, and also continuously
during phase II (from -1hr to +1hr of CA). During the whole GCO-500 phase,
this mode will be used continuously for 5 orbits (i.e. 16-hrs) and then cycled equally with
SWI MOON LIMB SCAN PS, SWI MOON LIMB STARE PS, and SWI 2D MAP PS. For
polarization studies, this mode will be used much less often as it require a S/C rotation. Finally,
it can be scheduled during solar occultations by Jupiter, moons, or the Europe torus.
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc
TBD
conditions that make the observation not possible (e.g. thruster firing)

Commanding